Study draft: "UVC-You Will See" study: longer vs. shorter umbilical venous catheter (UVC) dwell time (6-10 vs. 1-5 days) in very premature infants with birth weight < 1250 g and/or gestational age < 30 weeks.

Extending the UVC dwell time may significantly reduce the number of painful invasive procedures, with the potential to positively impact not only long-term pain perception but also important social competencies (attention, learning, and behavior). Thus, the "UVC-You Will See" study has the potential to substantially change current neonatal intensive care practice.